Gluttony (Latin: gula), derived from the Latin gluttire meaning to gulp down or swallow, means over-indulgence and over-consumption of food, drink, or wealth items.
In Christianity, it is considered a sin if the excessive desire for food causes it to be withheld from the needy. Some Christian denominations consider gluttony as one of the seven deadly sins, a misplaced or inordinate desire for food/drink.
In Deut 21:20 and Proverbs 23:21, it is זלל. The Gesenius Entry (lower left word) has indications of "squandering" and "profligacy" (waste).
In Matthew 11:19 and Luke 7:34, it is φαγος ("phagos" transliterated character for character), The LSJ Entry is tiny, and only refers to one external source, Zenobius Paroemiographus 1.73. The word could mean merely "an eater", since φαγω means "eat".
According to the list of 613 commandments that Jews must keep according to the Rambam, gluttony or excessive eating or drinking is prohibited. It is listed as #169: "Not to eat or drink like a glutton or a drunkard (not to rebel against father or mother)".
Church leaders from the ascetic Middle Ages took a more expansive view of gluttony:
Pope Gregory I (St. Gregory the Great), a doctor of the Church, described the following ways by which one can commit sin of gluttony, and corresponding biblical examples for each of them:
1. Eating before the time of meals in order to satisfy the palate.
2. Seeking delicacies and better quality of food to gratify the "vile sense of taste."